Sunday, August 9, 2009

Using variations of the classic card game 'War' to promote addition and subtraction

Another game I like to have kids play to promote number sense, addition and subtraction is the classic card game War. The original version of War is a great game in that it allows kids to think in terms of quantities: They have to think about which number is greater--so they're thinking in terms of quantities. I suggest even teaching younger children to play this but using unifix cube, counters, or even counting the suits on the cards. I prefer younger kids use manipulatives so they can make sense of numbers as well as see and feel larger quantities.

Double War is a twist on the orginal. Instead of one card, players put down two card each. The player with the greater sum wins the round.

Difference War is another twist. For this version you'll need 50 counters. I use counting chips in the video demo but you can use anything: craft gems, small pebbles, paper clips, etc. Each player put down a card. Players take the difference of the two cards in counters. So if player A puts down a 7 and player B puts down a 10; the difference of 10 and 7 is 3. Player B had the larger number and so picks up 3 counters. Players take back their card and place in a discard pile. After the 50 counters have run out, both players count up their counters; player with the most counters wins.

Enjoy watching your child play and learn!

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